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Built a pneumatic cannon? Then post it here! This section is for completed, finished cannons that you have built. Please include pictures and information.
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Unread postAuthor: bigbob12345 » Thu May 29, 2008 8:47 am

Well that is the second time that I have heard that this pump is shite, it was only 15 bucks so it wont be the end of the world if it breaks.
Its lasted a couple weeks of heavy use and I would like it to atleast last a month or two more.
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Unread postAuthor: THUNDERLORD » Thu May 29, 2008 10:06 am

I was thinking all you need is a 90 out the BV and a pipe for a shoulder stock (open at the bottom to vent).(?)
You could connect a rod from trigger to BV or some kind of spring action.
(maybe remove the BV handle and use mouse/rat trap spring).

Also I am thinking a silencer, (even that size) could be constructed more effective using couplings with fender washers or similar between each coupling. (couplings glued almost back to back)
Maybe with rubber washers sandwiched between two washers for the baffles. :roll: 8)
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Unread postAuthor: bigbob12345 » Thu May 29, 2008 6:33 pm

Yeah I am thinking of spring loading the ball valve.
And the gun isnt *that* loud so i dont really see the need to silence it.
You cant here it from indoors which means happy neighbors.
But that might be something worth trying with a louder gun.
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Unread postAuthor: STHORNE » Thu May 29, 2008 7:07 pm

very impressive rifle bb. man...for a rifle that slick couldn't you spend just a few more bucks and replace that pvc ball valve with a sprinkler valve?

That way you could have a trigger set-up resembling a rifle, and you could actually aim it.

Also, when you get the time/money, it needs a stock and sight bad!!! It's such a nice gun...I would hate to see it not "decked-out".

Again, very nice work. Impressive power for it's small size. Very impressive :wink:
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Unread postAuthor: bigbob12345 » Thu May 29, 2008 8:10 pm

Thanks
but dont you worry, its going to get all decked out soon enough. im working on the spring setup for the ball valve right now and it will allow me to fire it like a rifle.
And Ill go take a couple pics of the piston as I neglected to do so at first.
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Unread postAuthor: Tooo Easssyy » Fri May 30, 2008 5:04 am

Sweet paint job buddy really like it,
what psi can ya get it up to ??

and about the silencer try reading this if any of it will help:

http://www.freeinfosociety.com/science/ ... encer3.gif
http://www.freeinfosociety.com/science/silencer.html

Hope it helps
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Unread postAuthor: bigbob12345 » Fri May 30, 2008 9:27 am

Thanks
I can get the pressure all the way up to 900psi(dont feel like explaining) if I pleased but I only pressurize it to 140psi max
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Unread postAuthor: BlackH » Thu Jun 05, 2008 5:56 am

you can make a stock glue your piping in the ball valve just dont block the stock at the end like this
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Unread postAuthor: bigbob12345 » Thu Jun 05, 2008 8:33 am

Well thanks for putting in the time to make those drawings but I already have put a sprinkler on it with a trigger setup so I can easialy shoulder fire it.
And it will be getting a scope sometime within the next week or two.
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Unread postAuthor: BlackH » Fri Jun 06, 2008 3:30 am

OOOO NICE, pics!!
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Unread postAuthor: bigbob12345 » Fri Jun 06, 2008 8:38 am

I will put pics up of it when I get a chance to paint the sprinkler so it blends with the rest of the cannon.
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